Concrete

What is one of the oldest manufactured building materials used as a mortar and plaster by all the early civilizations?

• Lime

• Gypsum

• Cement

What must quicklime be mixed with before use?

• Water

• Sand

• Cement

What is the process called when quicklime is mixed with water?

• Slaking

• Hydration

• Calcination

What type of lime will set under water?

• Hydraulic lime

• Slaked lime

• Quicklime

What is gypsum rock ground fine and heated to produce?

• Plaster of Paris

• Lime plaster

• Cement

What is the main ingredient in Portland cement?

• Clinker

• Lime

• Gypsum

What should cement be protected from at the building site?

• Dampness

• Heat

• Cold

What is cement described as?

• A soft and silky material

• A hard and rough material

• A liquid substance

• A gas

What should be the maximum height of cement piles?

• Six sacks

• Twelve sacks

• Twenty sacks

• No limit

What is the maximum size for coarse aggregates in reinforced beams?

• 25mm

• 50mm

• 10mm

• 1 inch